// Copyright (C) 2009 Jesse Jones
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

using System;

namespace MmmDoc
{
	internal static class StringExtensions
	{
		/// <summary>Removes instances of `[0-]+ from type names.</summary>
		public static string StripBackTicks(this string name)
		{
			Contract.Requires(name != null);
			
			int i = 0;
			while (i >= 0 && i < name.Length)
			{
				i = name.IndexOf('`', i);
				if (i > 0)
				{
					int count = DoCountMatches(name, i + 1, c => char.IsDigit(c));
					if (count > 0)
						name = name.Remove(i, count + 1);
					++i;
				}
			}
			
			return name;
		}
		
		private static int DoCountMatches(string name, int startIndex, Predicate<char> predicate)
		{
			Contract.Requires(name != null);
			
			int i = startIndex;
			while (i < name.Length && predicate(name[i]))
			{
				++i;
			}
			
			return i - startIndex;
		}
	}
}
